CFL Confusion

oboyo

Active Member
After being inspired by many of the closet grows, I decided to start a project of my own :mrgreen:. I'll be using CFL's for my lighting. I picked up 2, 30watt nvision bulbs with 2 reflectors for 4 seedlingz. Each bulb has 2000 lumen output. On the back it says 3500k and I'm assuming this is the color rating. This is where the confusion begins.

Should these bulbs be alright to use during the veg state? I'm getting myself confused on lumen amount and color spectrum for each state. Please help :confused:
 

smokaine

Active Member
you can use both the red and blue spec for veg, but obviously the blue will do better in veg, and red for flower.
 

NO GROW

Well-Known Member
I hope this helps....It is copied and pasted from the grow FAQ at the top left of the screen. You should check it out when you get time.

5K - 7K Kelvin: Strong Blue Light
Promotes bushy growth. Ideal for rapid growth phase of plants.
Greatly enhances all-around plant growth when used with super
high output, high pressure sodium or 3K warm metal halide lamps.

4.2K - 4200 Kelvin: Cool white Flourescents
Can be used as supplimental blue lighting when used with a 3K
source.

4K - 4000 Kelvin: Neutral Metal Halide
Best single source for plant growth, producing shorter, bushier
growth than 3700 Kelvin and color rendition. Used in general
plant lighting.

3.7K - 3700 Kelvin: Softer Metal Halide(coated)
This coated lamp is used in general plant lighting and for more
rapid growth than 4000 Kelvin produces.

3K - 3200 Kelvin: Warm Metal Halide
Highest photosynthetically active radiation (PAR) value of all HID
lighting for all phases of plant growth. PAR watts account for the
nutritional value of light and are a direct measure of the light
energy available for photosythesis.

2.7K - 2700 Kelvin: High Pressure Sodium Lamps
Redder color mix, used for propagation, blooming, supplemental
greenhouse lighting.
 

oboyo

Active Member
wow, not sure how I managed to miss the grow faq up top lol. put a sticky on that :?. thanks for the help
 

Roseman

Elite Rolling Society
Good post, No Grow.

Bottom line is LOW kelvin for FLOWERING and HIGH Kelvins for Vegging.

The 3500 's you have are sort of in the middle, leaning toward the red spectrum for Flowering..
 

NO GROW

Well-Known Member
Good post, No Grow.

Bottom line is LOW kelvin for FLOWERING and HIGH Kelvins for Vegging.

The 3500 's you have are sort of in the middle, leaning toward the red spectrum for Flowering..

Thanks I try to help......
 

oboyo

Active Member
I'm debating whether to use those 3500's on the side of the plant towards the end of the veg state/beginning of flowering. But for now, time to run to the store to fix my errors. Thanks for the quick replies and tolerance of my stupidity :roll:
 

NO GROW

Well-Known Member
I'm debating whether to use those 3500's on the side of the plant towards the end of the veg state/beginning of flowering. But for now, time to run to the store to fix my errors. Thanks for the quick replies and tolerance of my stupidity :roll:

Not stupidity......Anyways thats what this sight is for....
 
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